Explanation

The greenhouse effect occurs when gases like CO₂ and methane trap heat from the sun in the Earth’s atmosphere.

This trapped heat causes a rise in global temperatures, contributing to climate change.

Explanation

Biometry is the application of statistical analysis to biological data.

It helps in studying health-related trends, like the number of people getting lung cancer due to smoking.

Explanation

Leukemia is a type of cancer that affects the white blood cells.

It causes the body to produce abnormal white blood cells that don't function properly.

Explanation

• Small pieces of DNA are called plasmids.
• Plasmids are circular, double-stranded DNA molecules that are separate from the chromosomal DNA.
• It can replicate independently, commonly found in bacteria.

Explanation

Euphoria (likely meant Euphorbia) is mostly a xerophyte, adapted to dry conditions, not water.

Lotus, Victoria, and Hydrilla are all hydrophytes, adapted to live in or on water.

Explanation

The stomach secretes pepsin and HCl, which help in protein digestion and killing germs.

Acidic pH in the stomach destroys harmful microorganisms ingested with food.

Explanation

Octopus belongs to the phylum Mollusca, which includes soft-bodied animals often with a shell.

Mollusks include octopus, squid, clams, and snails.

Explanation

In a food chain, herbivores are primary consumers, feeding on producers (plants), which places them at the second trophic level.

The first level is occupied by plants (producers), and herbivores come next.

Explanation

Protista includes both unicellular organisms like amoeba and multicellular organisms like algae.

Fungi also includes unicellular organisms like yeast and multicellular organisms like mushrooms and molds.

Explanation

Hypothalamus is responsible for temperature regulation.

It helps maintain the body's internal temperature by triggering responses like sweating or shivering.